zendeskverification.axcient.com has no CNAME records.
Question and response
Question
dig zendeskverification.axcient.com. NS
Answer
The response has no answer records.
Authority
axcient.com. 12 SOA ns1.efscloud.net. root.efscloud.net. 174 86400 7200 3600000 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0